One hundred years of Elementary School mathematics in the United States: a content analysis and cognitive assessment of textbooks from 1900 to 2000.

• Autores: David Baker, Hilary Knipe, John Collins, Juan Leon, Eric Cummings, Clancy Blair, David Gamson
• Localización: Journal for research in mathematics education, ISSN 0021-8251, Vol. 41, Nº 4, 2010, págs. 383-423
• Idioma: inglés
• DOI: 10.5951/jresematheduc.41.4.0383
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